A shell was fired from a mortar along a trajectory described by the equation , where is the height of the shell above the ground in kilometres when it has travelled a horizontal distance of kilometres. Find the horizontal distance covered by the shell before it hit the ground.
The height of a missile above its launch point can be found using where m is the height above the launch point, m/s is the vertical launch speed, and s is the time after launch. A missile is launched vertically upwards with a speed of 49 m/s. At what times will it be 44.1 m above its launch point?
After seconds, the height, , of a diver above the surface of the pool is given by the equation . How long does it take for the diver to reach the water?